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本文提出了导航卫星全向测控方法,能够消除两副测控天线射频合成产生的干涉区。将对地天线和背地天线接收到的上行遥控射频信号分别解调,然后进行数字合成;将下行遥测数字信号用两组不同的扩频码调制,然后分别通过两副测控天线发送遥测射频信号,地面用对应的两组不同的扩频码分别解调,再进行数字合成。该方法能够实现测控天线的360o全向覆盖,大大提高导航卫星的安全性和机动性。
This paper presents a navigation satellite omnidirectional measurement and control method, which can eliminate the interfering area generated by the two RF antennas. Demodulates the uplink remote radio frequency signals received by the ground antenna and the back ground antenna, respectively, and then performs digital synthesis; modulates the downlink telemetry digital signal with two different spreading codes and then transmits the telemetry radio frequency signals respectively through the two test and control antennas, Ground with the corresponding two different spread spectrum code demodulation, and then digital synthesis. The method can realize 360o omnidirectional coverage of the measurement and control antenna and greatly improve the safety and maneuverability of the navigation satellite.